聚宝盆 (聚寶盆) jù bǎo pén

jù bǎo pén set phrase treasure bowl; source of wealth; cornucopia; gold mine
Domain: Modern Chinese 现代汉语 , Subdomain: Wealth
Notes: Literally, treasure bowl but figuratively a source of wealth (CC-CEDICT '聚寶盆'; Guoyu '聚寶盆')